<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="../../node_modules/vue/dist//vue.js"></script>
    <title>Document</title>
</head>

<body>

    <div class="app">
        <div ref="msgDiv">{{msg}}</div>
        <div v-if="msg1">Message got outside $nextTick: {{msg1}}</div>
        <div v-if="msg2">Message got inside $nextTick: {{msg2}}</div>
        <div v-if="msg3">Message got outside $nextTick: {{msg3}}</div>
        <button @click="changeMsg">
            Change the Message
        </button>
    </div>
    <script>
        new Vue({
            el: '.app',
            data() {
                return {
                    msg: 'Hello Vue.',
                    msg1: '',
                    msg2: '',
                    msg3: ''
                }

            },
            methods: {
                changeMsg() {
                    this.msg = "Hello world."
                    this.msg1 = this.$refs.msgDiv.innerHTML
                    this.$nextTick(() => {
                        this.msg2 = this.$refs.msgDiv.innerHTML
                    })
                    this.msg3 = this.$refs.msgDiv.innerHTML
                }
            }
        })
    </script>
</body>

</html>